30 citations · 111 across the 9 of their papers we have counts for
10 papers
Classification of bianisotropic metasurfaces from reflectance and transmittance measurements
M. Albooyeh, V. Asadchy, J. Zeng +4
Upon using fundamental electromagnetic properties of metasurfaces we build a platform to classify reciprocal bianisotropic metasurfaces from typical experimental measurements and d…
Local spin transfer torque and magnetoresistance in domain walls with variable width
Hamidreza Kazemi, Sebastian Eggert, Nicholas Sedlmayr
Use of a spin polarized current for the manipulation of magnetic domain walls in ferromagnetic nanowires has been the subject of intensive research for many years. Recently, due to…
Exceptional Points of Degeneracy Directly Induced by Space-Time Modulation of a Single Transmission Line
Kasra Rouhi, Hamidreza Kazemi, Alexander Figotin +1
We demonstrate how exceptional points of degeneracy (EPDs) are induced in a single transmission line (TL) directly by applying periodic space-time modulation to the per-unit-length…
Ultra-Sensitive Radio Frequency Biosensor at an Exceptional Point of Degeneracy induced by Time Modulation
Hamidreza Kazemi, Amirhossein Hajiaghajani, Mohamed Y. Nada +4
We exploit the premises of exceptional points of degeneracy (EPDs) induced in linear time-periodic (LTP) systems to achieve extremely sensitive biosensors. The EPD is formed in a s…
Experimental Demonstration of Exceptional Points of Degeneracy in Linear Time Periodic Systems and Exceptional Sensitivity
Hamidreza Kazemi, Mohamed Y. Nada, Alireza Nikzamir +2
We present the experimental demonstration of the occurrence of exceptional points of degeneracy (EPDs) in a single resonator by introducing a linear time-periodic variation of one…
Illusion Mechanisms with Cylindrical Metasurfaces: A General Synthesis Approach
Mahdi Safari, Hamidreza Kazemi, Ali Abdolali +2
We explore the use of cylindrical metasurfaces in providing several illusion mechanisms including scattering cancellation and creating fictitious line sources. We present the gener…
Simultaneous Perfect Bending and Polarization Rotation of Electromagnetic Wavefront using Chiral Gradient Metasurfaces
Hamidreza Kazemi, Mohammad Albooyeh, Filippo Capolino
We introduce chiral gradient metasurfaces that allow perfect transmission of all the incident wave into a desired direction and simultaneous perfect rotation of the polarization of…
Scaling of intrinsic domain wall magneto-resistance with confinement in electromigrated nanocontacts
Robert M. Reeve, André Loescher, Hamidreza Kazemi +10
In this work we study the evolution of intrinsic domain wall magnetoresistance (DWMR) with domain wall confinement. Clean permalloy notched half-ring nanocontacts are fabricated us…
Applications and Potentials of Reciprocal Bianisotropic Metasurfaces
Mohammad Albooyeh, Viktar Asadchy, Jinwei Zeng +2
We discuss different applications and potentials of reciprocal bianisotropic metasurfaces including uniform and gradient metasurfaces, in particular, with anisotropic, chiral, and…
Exceptional Points of Degeneracy Induced by Linear Time-Periodic Variation Hamidreza
Hamidreza Kazemi, Mohamed Y. Nada, Tarek Mealy +2
We present a general theory of exceptional points of degeneracy (EPD) in periodically time-variant systems that do not necessarily require the presence of loss or gain, and we show…